1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535e05bfc639179ec3430cc012d101aa60a017127904686a4e3554b7c25ff14a. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f4801ff-ce33-4197-a62f-13d7cfae7cd2.json and https://artists.proofprofile.net/proofs/artist/6f4801ff-ce33-4197-a62f-13d7cfae7cd2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b45c2c8414769b2a5bc9a1aee9958ee614947a3b5f81d8a22c9ad9e0026a54. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812108494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0876ce2cb2f9e16da63f38d6d855189c5678f9a385bee5133eaa2985860621. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812100878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68efcc8f63c1136e18f2800d0e0763105bb12894e22c85096d5fb03f3576feb9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812100879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a249371d2580435b1275c21c0d3ce0f358f054cd5c0e14df56496628be01786. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812100880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1aaee1adb5282c62c5bbfa9038bea44997b774427959437ad24607571560f8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812100881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23296ee3d9c4e32daa946f99445138272a2a3889a6114b5792d47273f2fcb190. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812100882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbb34b49fadfd1d44692a8af49d4b8e9d1c4be04026a091a5c31e9756bb8be0. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812100884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda295fd3a8d38b115568d638b12ed2d722c2714568f62a17373151d367b0bdf5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812100886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef60de6e9e77599a761a6c95a48c73268f2a5e67a72099e165a29193926caff. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812100887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c43edc1711c0d07c3a4e53a4f4826e6235291695b78bc9995f2a8b893cb39ad. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812100888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89cca6acd8fecdfe0984d5114028e993f823f634c8fc2ad44fe123bef5f4f0f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812100889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7b34cc814c7f4e9989846a6577d1ed83685f405f6d4c604100a0fe01e4d391. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812100891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab151a73a209eb8533638f1dcc8716b23bbe6ac02346d311024bf9480eda48f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812100892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b97db1a49d4201a6767c228a8c8c18ff93cefff36c5a95dacb5e867f8c6ff71. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812100895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58a6e3741969b37f7c55bcdf5758db778ef3b79a807ba2b6b8df51cb2055b8c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812100896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e81744654f4252c9ec9746eb1d791cbadf6e99ed2340e60ce2de0bca739a003. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812100897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03a3525358b802bb4b4ffae0cb24284e8473fd70ed8c5f8bb6272014909b1be. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812102453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915eb4e1edec301d6eddc4338efb21da4fc59a7b52782544a1e883920cb56629. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7812102452.